adding a new scsi drive

When adding a new SCSI hard disk (LVD), it is not recognized. This
machine is in FL, so I do not have direct access to it. The system has
RH7.3 with a 2.4.21 kernel.
I seem to recall that rebooting found the drive. This I cannot do until
after 10pm. Is there another way to have it detect the drive? Note the
boot drive is on the same controller as the new drive. I am using ssh
to access the box.